Machinery



(No Model.)

I 0. B. STILWBLL,

, PAPER BAG MAGHINERY. F No. 410,125. Patented Aug. 27 1889.

witnesses: 2/. 6 a.

N, PETERS. fiolM-Rhognpher, wuhinglon. D. C.

UNITED, STATES PATENT OFFICE.

CHARLES E. STIL'WELL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE UNION PAPER BAG MACHINE COMPANY, OF SAME PLACE.

PAPER-BAG MACHINERY.

SPECIFICATION forming part of Letters Patent No. 410,125, dated August 27, 1889.

Application filed January 28, 1889. $erial No. 297,785. (No model.)

To aZZ whom it may concern:

Be it known that I, CHARLES B. STILWELL, of the city and county of Philadelphia, State of Pennsylvania, haveinvented a new and useful Improvement in Paper-Bag Machinery, 011' which the following is a true and exact description, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to the mechanism for forming bellows-sided tubes from webs of paper and severing them into bag-blanks; and my object is to provide improved devices for accomplishing these purposes.

Reference is now had to the drawings, in which my invention is illustrated, and in which- Figure 1 is a sectional elevation of my device along the medial line of the former; Fig. 2, a plan view; Fig. 8,aview showing the lines on which the web is severed; Fig. 4, a front elevation of the bar J, and Fig. 5 a

1 cross-section of the completed tube.

A is the roll of paper; 15 B, guide-rolls; C, the paste-roll; C, the paste-trough, and D the web of paper, D indicating the severed blank.

As shown, the forming mechanism by which the web is folded into a bellows-sided tube is of a well-known construction, being given simply as anexample of a well-known class of devices, and not as in itself forming an essential part of my invention. It consists of former-plates G G sustained on a standard G, tucking-wheels I-I H,-which push the paper between the former-plates to form the bellows folds, fingers I I, which fold over the edges of the web, a guide-bar J, and presser-rolls K K.

At the (111 of the former to which the web passes I provide a cutting device which will sever the web on the line d, Fig. 3, said line being equal in length to the breadth of the under side of the tube, and where a lip is desired on the blank curved, as shown. As shown, this cutting device consists of a roll F, equal in breadth to the tube and provided with knives f f f, set in its face. A roll F, having a groove or grooves f in its face, coacts with this roll F, the two feeding the web along between them and severing it on the line 61 at equal distances apart.

E E are guiding-fingers to deflect the paper as it passes between rolls F F.

At the other end of the tube-forming mechanism I provide a knife L and striker M, which coact, in the well-known manner of such devioes,to sever the tube,making the cut through the bellows-folded sides and top of the tube on the lines which in the opened blank are indicated by cl (1, Fig. 3.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a paper-bag machine, the combination, with-mechanism for folding a web of paper into a bellows-folded tube, of a cutter F F, arranged at the end of the folding mechanism to which the web passes, so as to cut the web centrally in the form of a lip d, and a knife L and striker M at the other end of the folding mechanism, arranged to sever the folded tube on the line d d, all substantially as and for the purpose specified.

CHAS. B. STILWELL.

Witnesses: WILLIAM H. DOERING,

LISLE STOKES. 

